I'm trying to put my quadcopter to fly but I'm having a major issue that i can't figure out...if i connect one of the esc to the CH 3 on the radio receiver, i can accelerate it....everything's fine....but when i put everything together, the only way to get power to the arduino is through the ftdi, if i just use the battery, nothing....dead :x

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Hi, I also have this board. You need to either solder the bridge that is top right in the above image, or use a separate supply. The bridge basically connects the +5v from your ESC to the supply for the main board. This is the way I have mine configured - without any noise problems.